alt Hacker NewsOn average, maybe yes. But in the rich world we also used a huge chunk of fossil fuel for relatively small marginal gains in quality of life (adding a fifth weekend shopping trip per year, buying a superyacht), and sometimes worsening life expectancy (driving too much, eating too much beef).
Why should I believe your assessment that a huge chunk of fossil fuel use by the rich world went to "relatively small marginal gains in quality of life"? I think they went to massive quality of life gains for huge numbers of people, and that suddenly removing fossil fuels as an energy source would be catastrophically bad for huge numbers of people, and not obviously worse than the effects of global warming over a comparable timeframe.